apc 安装下了最新的APC-3.0.18.tgz，解压，进入目录

apc下载地址 http://pecl.php.net/package/APC

/usr/local/php/bin/phpize （生产configure文件）

./configure --enable-apc --enable-apc-mmap --with-php-config=/usr/local/bin/php-config

Make make.Install

cp /usr/local/lib/php/extensions/no-debug-zts-20060613/apc.so /usr/local/lib/php/extensions/apc.so

chmod 755 /usr/local/lib/php/extensions/apc.so

配置/etc/php.ini 末尾加入

extension=apc.so

apc.enabled = 1

apc.cache_by_default = on

apc.shm_segments = 1

apc.shm_size = 128

apc.ttl = 7200

apc.user_ttl = 7200

apc.num_files_hint = 1024

apc.write_lock = On

apc.gc_ttl=3600

apc.ttl=0

apc.mmap_file_mask=/tmp/apc.XXXXXX

重启apache